Phosphorus in alkaline soils of the semiarid region, Brazil: inorganic fractions, capacity factor, and availability

Phosphorus in alkaline soils of the semiarid region, Brazil: inorganic fractions, capacity factor, and availability

The study was designed to quantify the contents of Pi fractions and correlate them with the P capacity factor of soils in the Brazilian semiarid region. We also evaluated the effect of soil P doses contact time and P availability for maize plants in alkaline soils of the Brazilian semiarid region. S...

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Bibliographic Details
Published in:International journal of phytoremediation Vol. 25; no. 8; pp. 965 - 980
Main Authors: Paiva, Maria Regilene de Freitas Costa, Oliveira, Fábio Henrique Tavares de, Alves, Welka Preston Leite Batista da Costa, Farias, Milene de Lima, Cunha, Marx Lima da, Tavares, Hernane Arllen Medeiros, Morais Neta Góis, Helena Maria, Santos, Marina Beatriz da Silva Bezerra, Arruda, Jandeilson Alves de, Grangeiro, Leilson Costa, Bezerra, Marcio Gleybson da Silva, Sá, Francisco Vanies da Silva
Format: Journal Article
Language:English
Published: United States Taylor & Francis 2023
Taylor & Francis Ltd
Subjects:
Adsorption
Alkaline soils
Availability
Biodegradation, Environmental
Brazil
Calcareous soils
Calcium ions
contact times
Ferric oxide
Fertilization
Iron oxides
phosphate fertilization
Phosphates
Phosphorus
Phosphorus - chemistry
phosphorus phytoextraction
Semi arid areas
Semiarid lands
Soil - chemistry
Sorption
Zea mays L
Brazil
Calcareous soils
phosphate fertilization
phosphorus phytoextraction
contact times
sorption
Zea mays L
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Summary:The study was designed to quantify the contents of Pi fractions and correlate them with the P capacity factor of soils in the Brazilian semiarid region. We also evaluated the effect of soil P doses contact time and P availability for maize plants in alkaline soils of the Brazilian semiarid region. Soil samples were collected between the Piranhas-Açu (RN) and Jaguaribe (CE) rivers valleys. The maximum phosphate sorption capacity was highly correlated with the values of remaining P, indicating that it can be used as a measure to estimate the P capacity factor of these soils. Maximum P sorption capacity correlated with Fe 2 O 3 and Ca 2+ contents and pH values. These results demonstrate that P sorption is explained by P adsorption on the surface of iron oxides and by its precipitation with Ca 2+ in alkaline soils. The contact time increases promote plant P contents decreased substantially in the first 30 to 60 days after fertilization and decreased until 120 days of incubation but then tended to stabilize at the longest soil P contact times. The clay content and P-remnant estimate the P capacity factor in alkaline soils. In alkaline soils, there is a predominance of P-Ca and P-Fe. The availability of P stabilizes after 120 days. The largest corn biomass occurs between the P doses of 256-288 mg dm −3 .
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content type line 23
ISSN:1522-6514
1549-7879
DOI:10.1080/15226514.2022.2124232